1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/*
Copyright (C) 2007, David Howden.
Copyright (C) 2010 William Hart
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "nmod_poly.h"
int nmod_poly_set_str(nmod_poly_t poly, const char * s)
{
const char * whitespace = " \t\n\r";
slong i, length;
ulong n;
if (flint_sscanf(s, "%wd %wu", &length, &n) != 2)
return 0;
/* jump past length (n will be skipped in first loop iter) */
s += strcspn(s, whitespace);
s += strspn(s, whitespace);
nmod_poly_fit_length(poly, length);
poly->length = length;
for (i = 0; i < length; i++)
{
s += strcspn(s, whitespace); /* jump to next whitespace */
s += strspn(s, whitespace); /* skip whitespace */
if (!flint_sscanf(s, "%wu", &poly->coeffs[i]))
{
poly->length = i;
return 0;
}
}
_nmod_poly_normalise(poly);
return 1;
}